Finished the footer

frontend/src/app/footer/footer.component.ts

@@ -1,4 +1,5 @@
 import {Component} from '@angular/core';
+import {ALTITUDE_VERSION} from '../constant';
 
 @Component({
   selector: 'app-footer',
@@ -10,4 +11,6 @@ export class FooterComponent {
   public getCurrentYear() {
     return new Date().getFullYear();
   }
+
+  protected readonly ALTITUDE_VERSION = ALTITUDE_VERSION;
 }